Done!

controllers/auth.js

@@ -224,17 +224,25 @@ module.exports.postSignin = async (req, res, next) => {
     console.log("req.body", req.body);
     let user = await User.findOne({ email });
     if (isGoogle) {
-      user.isVerified = true;
-      user = await user.save();
-      const isMatched = await bcrypt.compare(password, user.password);
-      if (isMatched) {
-        const token = jwt.sign({ _id: user._id }, JWT_secret);
-        res.json({
-          token: token,
-        });
+      if (user) {
+        user.isVerified = true;
+        user = await user.save();
+        const isMatched = await bcrypt.compare(password, user.password);
+        if (isMatched) {
+          const token = jwt.sign({ _id: user._id }, JWT_secret);
+          res.json({
+            token: token,
+          });
+        } else {
+          res.json({
+            message: "email and password doesn't match",
+            type: "error",
+          });
+          return;
+        }
       } else {
         res.json({
-          message: "email and password doesn't match",
+          message: "User Doesn't Exists",
           type: "error",
         });
         return;